[Bug 43191] New: Syslog fills with messages about assuming drive cache when SD card not present

[Bug 43191] New: Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191

           Summary: Syslog fills with messages about assuming drive cache
                    when SD card not present
           Product: SCSI Drivers
           Version: 2.5
    Kernel Version: 3.4.0
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: DC390
        AssignedTo: linux-scsi@vger.kernel.org
        ReportedBy: sriharshatotakura+kernelbugs@gmail.com
        Regression: No


Created an attachment (id=73153)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73153)
list of currently loaded modules

I'm observing the issue discussed in this bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=43190
I'm reporting it here since the original reporter didn't seem to have reported
here:


I get this output repeatedly after every minute or so:

[  465.435298] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[  465.438295] sd 6:0:0:0: [sdb] Asking for cache data failed
[  465.438303] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  517.147818] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[  517.150811] sd 6:0:0:0: [sdb] Asking for cache data failed
[  517.150822] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  568.859459] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[  568.862330] sd 6:0:0:0: [sdb] Asking for cache data failed
[  568.862339] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  620.571790] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[  620.574659] sd 6:0:0:0: [sdb] Asking for cache data failed

However, when I put in a memory card it stops after outputting this:

[ 1543.770351] sd 6:0:0:0: [sdb] 3970048 512-byte logical blocks: (2.03 GB/1.89
GiB)
[ 1543.775577] sd 6:0:0:0: [sdb] No Caching mode page present
[ 1543.775586] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1543.780604] sd 6:0:0:0: [sdb] No Caching mode page present
[ 1543.780611] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1543.807961]  sdb: sdb1

and once I eject the memory card it continues:

[ 4980.766490] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 5032.474959] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 5032.477961] sd 6:0:0:0: [sdb] Asking for cache data failed
[ 5032.477970] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 5084.187541] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 5084.190546] sd 6:0:0:0: [sdb] Asking for cache data failed
[ 5084.190554] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 5135.899244] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 5135.902369] sd 6:0:0:0: [sdb] Asking for cache data failed
[ 5135.902378] sd 6:0:0:0: [sdb] Assuming drive cache: write through

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #1 from Sree Harsha Totakura <sriharshatotakura+kernelbugs@gmail.com>  2012-05-01 22:22:23 ---
Created an attachment (id=73154)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73154)
lspci

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #2 from Sree Harsha Totakura <sriharshatotakura+kernelbugs@gmail.com>  2012-05-01 22:22:51 ---
Created an attachment (id=73155)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73155)
scsi

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191


Sree Harsha Totakura <sriharshatotakura+kernelbugs@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Platform|All                         |i386




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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

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https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #3 from Chris Fahlman <chrisfahlman@gmail.com>  2012-05-02 04:07:43 ---
*** Bug 43190 has been marked as a duplicate of this bug. ***

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

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https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #4 from Christian Kujau <lists@nerdbynature.de>  2012-05-03 06:55:27 ---
Noticed this on a "Lenovo Ideapad S10" as well. Ubuntu #925760 has a workaround
for this:

$ rmmod ums_realtek

 usbcore: deregistering interface driver ums-realtek

And the messages stop. As soon as the module is loaded again, the messages
resume and repeat every 52 seconds:

$ modprobe ums_realtek

May  2 23:50:46 scsi5 : usb-storage 1-5:1.0
May  2 23:50:46 usbcore: registered new interface driver ums-realtek
May  2 23:50:47 scsi 5:0:0:0: Direct-Access Generic- Multi-Card 1.00 PQ: 0
ANSI: 0 CCS
May  2 23:50:47 sd 5:0:0:0: Attached scsi generic sg1 type 0
May  2 23:50:47 sd 5:0:0:0: [sdb] Attached SCSI removable disk

May  2 23:51:38 sd 5:0:0:0: [sdb] Test WP failed, assume Write Enabled
May  2 23:51:38 sd 5:0:0:0: [sdb] Asking for cache data failed
May  2 23:51:38 sd 5:0:0:0: [sdb] Assuming drive cache: write through
May  2 23:52:30 sd 5:0:0:0: [sdb] Test WP failed, assume Write Enabled
May  2 23:52:30 sd 5:0:0:0: [sdb] Asking for cache data failed
May  2 23:52:30 sd 5:0:0:0: [sdb] Assuming drive cache: write through

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #5 from Christian Kujau <lists@nerdbynature.de>  2012-05-03 07:10:38 ---
Created an attachment (id=73164)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73164)
dmesg; lspci; lspci -v; lspci -vvv; cat /proc/scsi/scsi; lsmod

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43191


Daniel Mehrmann <daniel.mehrmann@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel.mehrmann@gmx.de




--- Comment #6 from Daniel Mehrmann <daniel.mehrmann@gmx.de>  2012-05-07 14:32:14 ---
I can confirm it happens with my Netbook LG x110 as well.
I attach a boot.log

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

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https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #7 from Daniel Mehrmann <daniel.mehrmann@gmx.de>  2012-05-07 14:33:29 ---
Created an attachment (id=73217)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73217)
dmesg output

dmesg output of Netbook LG x110

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

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https://bugzilla.kernel.org/show_bug.cgi?id=43191





--- Comment #8 from Petr Pisar <petr.pisar@atlas.cz>  2012-05-08 09:00:27 ---
See <https://bugzilla.redhat.com/show_bug.cgi?id=769747> for other
udev---kernel debugging.

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[Bug 43191] Syslog fills with messages about assuming drive cache when SD card not present

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https://bugzilla.kernel.org/show_bug.cgi?id=43191


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@lxorguk.ukuu.org.uk
          Component|DC390                       |Serial ATA
         AssignedTo|linux-scsi@vger.kernel.org  |jgarzik@pobox.com
            Product|SCSI Drivers                |IO/Storage




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